|
Post by Grand Lunar on Jan 1, 2007 23:06:26 GMT -4
Don't know if this was asked already...
In reference to claims made that the F-1 engines were faked...
What technological hurdles would have prevented the construction of an engine like the F-1?
|
|
|
Post by nomuse on Jan 2, 2007 15:42:53 GMT -4
OK, I will answer these, one at a time. 1) The LM Descent Engine generated 2600 pounds of thrust upon landing, and should supposedly have burned a massive blast crater in the lunar surface. In that case, shouldn't the heat from the 90,000-pound thrust turbofans on the Boeing 777-300 melt concrete and vaporize baggage handlers hundreds of feet away? No, because they are hundreds of feet away. I just got off a 747-400. When we began our taxi towards take-off I clearly saw a man standing just thirty feet from the engines -- almost directly below my window. Come to think, about twenty years ago I more than once walked BETWEEN the engines on a C-141, going up the rear cargo ramp. Of course the aircraft wasn't moving at the time. It was, however, in motion when I and a bit of very delicate nylon exited the airplane again. Interestingly, we were told when jumping from a Starlifter to avoid the usual vigorous leap from the door -- on the slight chance we might get a little too much hot air on that fragile 'chute. I'd say "hundreds of feet" is an exaggeration. Personally, I'd be more careful of the other end of the engine....
|
|
|
Post by Count Zero on Jan 2, 2007 18:27:58 GMT -4
Personally, I'd be more careful of the other end of the engine....
"Darn." <kick> -- Mal Reynolds
|
|
|
Post by sts60 on Jan 2, 2007 23:36:16 GMT -4
Personally, I'd be more careful of the other end of the engine....
I saw a video of an aircraft carrier flight deck crewman signalling to the pilot of an A-6, then flick he vanished and a shower of sparks came out the Intruder's port engine exhaust.
The sparks were some of his gear getting Mixmastered by the engine. But he got hung up in the inlet and was actually not hurt.
At sea or not, I think someone would find him a drink after that.
|
|
|
Post by james on Jan 3, 2007 0:47:58 GMT -4
Personally, I'd be more careful of the other end of the engine.... "Darn." <kick> -- Mal Reynolds haha I loved that scene. I haven't watched my Firefly dvd's in a while... now you got me in the mood (not that i'm complaining). This the clip? Looks like an A-6 anyway. www.youtube.com/watch?v=vHtgXsIxA8A
|
|
|
Post by PeterB on Jan 3, 2007 2:02:30 GMT -4
What technological hurdles would have prevented the construction of an engine like the F-1? Combustion instability was a major problem in the development of the F-1. The action of fuel igniting in the combustion chamber produced massive pressure. If things went slightly wrong, the pressure could form pressure waves which could literally bounce around the inside of the chamber. If the waves combined, they might either blow the streams of incoming fuel and oxidiser around, spoiling engine efficiency, or even destroy the combustion chamber. Murray and Cox's book "Apollo - The Race to the Moon" spends a few pages telling the story.
|
|
|
Post by Grand Lunar on Jan 7, 2007 22:38:07 GMT -4
What technological hurdles would have prevented the construction of an engine like the F-1? Combustion instability was a major problem in the development of the F-1. The action of fuel igniting in the combustion chamber produced massive pressure. If things went slightly wrong, the pressure could form pressure waves which could literally bounce around the inside of the chamber. If the waves combined, they might either blow the streams of incoming fuel and oxidiser around, spoiling engine efficiency, or even destroy the combustion chamber. Murray and Cox's book "Apollo - The Race to the Moon" spends a few pages telling the story. I doubt HBers would know anything on that. ;D
|
|